Improvement in machines for cutting cogs in clock-wheels



V L. It GRANT. MACHINES FOR CUTTING co'es m CLOCK-WHEELS.

No, 132,136, Patented Sept.12.1876.

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LOUIS E. GRANT, 0E WINSTED, ooNNEo IoU AssIGNo 0E ONE-HALF HIS IGHT TO WILLIAM L. GILBERT, OF sAME PLACE.

IMPROVEMENT m MACHINES FOR CUTTING COGS m CLOCK-WHEELS.

Specificatio'n forming part of Letters Patent No. 182,186, dated September 12, 1876; application filed April 28,1876.

10 all whom it may concern:

Beit known that I, LoUIs F. GRANT, of Winst'ed, in the county of Litchfield and State of Connecticut, have invented a certain new and useful Improvement in Machines for Cutting Cogs or Teeth in Clock-Wheels and the following is a' full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of thisspecification, in which Figure 1 represents a perspective view of the' carriage, showing the dividing or index plate, the mandrel on'which the row of clockwheels are secured to be cut, and the center slide and point for supporting the. end of the mandrel firmly from vibrating in cutting a long row of wheels at one time. Fig. 2 is an enlarged broken-off section of the carriage and mandrel, showing a sectional side view of the slide and center, and the spring for holding the center-point in place to the support of the projecting end of the mandrel.

My invention consists in the sliding spindle, with pointed center for supporting the long projecting portion of the mandrel, as hereinafter more fully described.

The carriage A is supported upon a frame on which a series of cutting-burs are arranged to cut and finish the teethrof theclock-wheels a, as they are placed in quantities on the axle b or projecting spindleof the mandrelB, and passed under the cutters. To the sliding carriage A there is an additional standard, 0, in which is fitted the sliding spindleD in a direct line with the mandrel B,

cess e at the outer end of the spindle, the arm or axle b, on which the series of clockwheels are secured by the screw-nut F, is held from vibrating or springing under the action of the revolving cutters, so that from two to four: times as many wheels can be cut and finished at each operation, or at one time, as could be cut on the carriages heretofore used, and the whole series he at the same time more smooth and perfect.

It is not deemed necessary to describe the dividing-plate, or other portions of the machine,

sliding spindle D, which presents no obstacle to the putting on or taking off of the wheels. What I claim as my invention, and desire to secure by Letters Patent, is-

In a machine for cutting cogs or teeth in clock-wheels, the sliding spindle D, with its point at and recess 6 at the rear end, and the I spring E for holding the same in place, in

combination with theaxle b of the mandrel B,

substantially in the manner herein shown and and described, for the purpose specified.

In testimony whereof I hereunto subscribe my name.

Louis 'E. GRANT.

Witnesses: HENRY GAY,

EDMUND B. HULBERT. 

